Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dde2f390e2681b2…

MALICIOUS

PDF

75.4 KB Created: 2021-03-14 05:20:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb632c3e9e057a01fda40937d2fd823 SHA-1: 9e5b85d4b3469b12bd000c94102bd471ff55448a SHA-256: 5dde2f390e2681b2b4c5bb3c1f8d81b4d35160e761727e1fb5765824d5ba40b0
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URL that appears to be part of a lure, likely for phishing or malware distribution. The heuristic 'SE_INVOICE_LURE' suggests a deceptive content strategy, and the presence of multiple unknown URLs indicates a potential distribution point for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/wix?keyword=shein+promo+code+2020+june
    • https://cdn-cms.f-static.net/uploads/4409093/normal_6041397d916bf.pdf
    • http://sale-siberian-force.online/78667947260ebhut.pdf
    • http://smirno.life/fixoxosijexifibopexeck28p.pdf
    • http://gukabibus.mygamesonline.org/kuzadaligerovigororimuv.pdf
    • http://vivekawiga.sportsontheweb.net/86733644180.pdf
    • http://bazis-rostov.com/zemikakebogelebososawaz6tunq.pdf
    • http://comforfemj.fun/why_is_my_fitbit_inspire_not_chargingvz2gr.pdf
    • http://pink-echo.club/64135964940hsw8.pdf
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5fe2414a573e7.pdf
    • http://fodefon.getenjoyment.net/antonin_artaud_theatre_and_its_double.pdf
    • http://kwini-fini.online/bar_graph_template_powerpoint_free2tg23.pdf
    • http://jaxagogilexet.sportsontheweb.net/mavikuwokuruji.pdf
    • https://cdn-cms.f-static.net/uploads/4445119/normal_604a306c57b27.pdf
    • http://hookup666.site/kipudobapug1n4i3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_4fc5e928bdd147c39f847bb5f28f67b3.pdf?index=true
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_043f00940dc84f87b2fb99633b20a4d8.pdf?index=true
    • https://44f39d5c-a655-4437-91b6-62b11e148e71.filesusr.com/ugd/eb4c03_07a0840af38846c5b06342e8d098f2fd.pdf?index=true
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_6fa59d1b669a4f6fb39eae10fe4ea6b4.pdf?index=true
    • https://f89b8795-a90f-4359-81e0-6309601a98d9.filesusr.com/ugd/8e7730_a41803c51b2145fca6356cdc94f6f7d0.pdf?index=true
    • https://2a1457bb-a4d2-449b-8914-d784a503a6da.filesusr.com/ugd/c0fca2_de7ebb809cb74c669e58d7694f8c6555.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8fb.bin
4db346988e98c777db76b698f4dff696feb59eaaff958e3808895dcdd47b8618		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FB 5344 bytes
font_01_sfnt_off0000fb0f.bin
56f293eae23feab4ff34069c382c163d6b4aef076313109482b109549f775018		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0F 11076 bytes

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